Financial transaction method, financial transaction system and financial transaction program

摘要

Problem to be solved: to provide a financial transaction method for discriminating an illegal account inquiry easily and with high accuracy.In the financial transaction system, the self-contained server 10 stores the account information received from the user terminal 40 in the account inquiry history information database 12a and transmits the account information to the integrated ATM server 20.The integrated ATM server transmits the account information to the other row server 30 corresponding to the received account information.The other server performs inquiry processing of the received account information and returns the result.The integrated ATM server transmits the received inquiry result to the self addressed server.The self-contained server stores the received account inquiry result in the account inquiry history information database as account inquiry history information together with account information of the same request number, and if there is no account inquiry by the same user in the past, it judges whether or not it is an illegal account inquiry based on the current account inquiry history information. When an account inquiry result is transmitted to the user terminal 40 and it is judged to be invalid, the inquiry inquiry of the user is stopped.Diagram